منابع مشابه
Optic Disc Localization in Ocular Fundus Images
This paper presents a novel approach to the fast localization and extraction of optic disc from fundus images of the human retina. Optic disc continues to be a major landmark for fundus image registration and is indispensible for the understanding of retinal fundus images. For the detection of optic disc, we first decompose the image into its bit planes. The lower order bit planes are found to ...
متن کاملPhotographic recording of slit-lamp appearances of the ocular fundus.
The four methods of illumination in the use of slit-lamp biomicroscopy of the anterior segment, described first by Vogt, are equally useful in the posterior part of the eye. Examination of the ocular fundus is more difficult. In particular, photography of the central and peripheral parts of the fundus demands additional technical arrangements if all the appearances of biomicroscopy are to be re...
متن کاملEffects of caffeine on microcirculation of the human ocular fundus.
PURPOSE To determine the effect of caffeine on microcirculation in the human ocular fundus. METHODS The microcirculation in the ocular fundus of 10 healthy volunteers (10 eyes) was studied using a laser speckle tissue circulation analyzer. Caffeine or placebo (100 mg) was administered orally in a double-masked manner. Square blur rate (SBR), a quantitative index of blood flow velocity, was me...
متن کاملReflection of light by small areas of the ocular fundus.
Light reflected from 50 micrometer spots on the fundi of two rhesus monkeys and three human volunteers was measured as a function of wavelength in 10 nm. jumps from 400 to 900 nm. The areas measured were a retinal artery and vein, areas of the disk, macula, and retina devoid of visible blood vessels, and the fovea.
متن کاملOcular Fundus Photography as an Educational Tool.
The proficiency of nonophthalmologists with direct ophthalmoscopy is poor, which has prompted a search for alternative technologies to examine the ocular fundus. Although ocular fundus photography has existed for decades, its use has been traditionally restricted to ophthalmology clinical care settings and textbooks. Recent research has shown a role for nonmydriatic fundus photography in nonoph...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1985
ISSN: 0007-1161
DOI: 10.1136/bjo.69.7.556